Weather in Bihar
Bihar is home to 40 cities tracked on Mausam Online, including Patna, Gaya and Bhagalpur. Live weather, hourly forecasts and air-quality data are available for every city.
Climate & seasons
Bihar lies on the Ganges plain, with a hot summer, a long monsoon and a cool winter. The heat peaks in April and May, and pre-monsoon thunderstorms often break it. Most of the year's rain falls from June to September, heaviest in July and August, and in many years the rivers flowing down from Nepal flood large parts of the north of the state.
When to visit Bihar
The most comfortable months to visit are October to February, once the monsoon has withdrawn and before the heat returns. December and January are the coolest months, and fog is common on winter mornings.
Air quality in Bihar
Air quality is usually at its worst between November and January and at its best during the monsoon, when rain washes the air.